热回收型太阳能分级溶液集热/再生系统模型及环境适用性分析

doi:10.11949/j.issn.0438-1157.20170033

化工学报 ›› 2017, Vol. 68 ›› Issue (8): 3242-3249.DOI: 10.11949/j.issn.0438-1157.20170033

热回收型太阳能分级溶液集热/再生系统模型及环境适用性分析

彭冬根, 罗丹婷, 程小松

南昌大学建筑工程学院, 江西南昌 330031

收稿日期:2017-01-09 修回日期:2017-05-05 出版日期:2017-08-05 发布日期:2017-08-05
通讯作者: 彭冬根
基金资助:
国家自然科学基金项目（51266010）；江西省科技支撑计划项目（20123BBG70195）。

Modeling and environmental applicability of solar solution grading collector/regenerator system with heat recovery

PENG Donggen, LUO Danting, CHENG Xiaosong

School of Civil Engineering and Architecture, Nanchang University, Nanchang 330031, Jiangxi, China

Received:2017-01-09 Revised:2017-05-05 Online:2017-08-05 Published:2017-08-05
Supported by:
supported by the National Natural Science Foundation of China (51266010).

摘要/Abstract

摘要：

为了在极端气候条件下提高高浓度溶液的集热再生效率，提出一种带同级热回收和级间热回收的太阳能分级溶液集热再生方法。基于填料储液槽的热质平衡，建立预除湿溶液参数可动态调整的太阳能分级集热再生系统数学模型。数值模拟发现在不同室外环境条件下分级再生和单级再生效率对比存在临界点，室外环境温度和相对湿度高于临界点，太阳辐射辐射强度低于临界点，分级再生优于单级再生。文章最后综合给出分级集热再生的环境和溶液浓度适用范围，发现在低太阳辐射、高温高湿的气候环境下，其对高浓度溶液再生越有利。

关键词: 分级, 再生, 临界点, 模拟, 效率

Abstract:

To improve the collection and regeneration efficiency of strong solution under extreme conditions, this paper reveals a solar grading collector/regenerator method with inter-grade and same-grade heat exchangers. Based on heat and mass balance in the packed reservoir, a model of solar grading collector/regenerator system in which pre-dehumidification solution parameters could be adjusted is established. Numerical simulation shows that there are critical points in regeneration efficiency of grading regeneration under variety of outdoor situations compared with single-stage regeneration. Grading regeneration is preferable to single-stage regeneration while outdoor environmental temperature and relative humidity are above the critical points as well as sun radiation intensity is lower than the critical point. Finally, the applying ranges of grading collector/regenerator system on environmental parameters and solution concentration are comprehensively provided in this paper and it is found that the situations of lower radiation from sun and higher temperature and relatively humidity are beneficial to regenerate solution of high concentration by grading collector/regenerator system.

Key words: grading, regeneration, critical point, simulation, efficiency

中图分类号:

TQ028.8

彭冬根, 罗丹婷, 程小松. 热回收型太阳能分级溶液集热/再生系统模型及环境适用性分析[J]. 化工学报, 2017, 68(8): 3242-3249.

PENG Donggen, LUO Danting, CHENG Xiaosong. Modeling and environmental applicability of solar solution grading collector/regenerator system with heat recovery[J]. CIESC Journal, 2017, 68(8): 3242-3249.

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热回收型太阳能分级溶液集热/再生系统模型及环境适用性分析

Modeling and environmental applicability of solar solution grading collector/regenerator system with heat recovery

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